分数(化学)
治愈率
相对存活率
生存分析
人口
死亡率
比例危险模型
危险系数
医学
存活率
统计
癌症
数学
内科学
置信区间
癌症登记处
有机化学
化学
环境卫生
出处
期刊:Stata Journal
[SAGE]
日期:2007-09-01
卷期号:7 (3): 351-375
被引量:106
标识
DOI:10.1177/1536867x0700700304
摘要
Cure models are a special type of survival analysis model where it is assumed that there are a proportion of subjects who will never experience the event and thus the survival curve will eventually reach a plateau. In population-based cancer studies, cure is said to occur when the mortality (hazard) rate in the diseased group of individuals returns to the same level as that expected in the general population. The cure fraction is of interest to patients and a useful measure to monitor trends and differences in survival of curable disease. I will describe the strsmix and strsnmix commands, which fit the two main types of cure fraction model, namely, the mixture and nonmixture cure fraction models. These models allow incorporation of the expected background mortality rate and thus enable the modeling of relative survival when cure is a possibility. I give an example to illustrate the commands.
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